| <!DOCTYPE html><!-- This page is a placeholder for generated extensions api doc. Note: |
| 1) The <head> information in this page is significant, should be uniform |
| across api docs and should be edited only with knowledge of the |
| templating mechanism. |
| 3) All <body>.innerHTML is genereated as an rendering step. If viewed in a |
| browser, it will be re-generated from the template, json schema and |
| authored overview content. |
| 4) The <body>.innerHTML is also generated by an offline step so that this |
| page may easily be indexed by search engines. |
| --><html xmlns="http://www.w3.org/1999/xhtml"><head> |
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| <title>Google Chrome Extensions - Google Code</title></head> |
| <body> <div id="gc-container" class="labs"> |
| <div id="devModeWarning"> |
| You are viewing extension docs in chrome via the 'file:' scheme: are you expecting to see local changes when you refresh? You'll need run chrome with --allow-file-access-from-files. |
| </div> |
| <!-- SUBTEMPLATES: DO NOT MOVE FROM THIS LOCATION --> |
| <!-- In particular, sub-templates that recurse, must be used by allowing |
| jstemplate to make a copy of the template in this section which |
| are not operated on by way of the jsskip="true" --> |
| <div style="display:none"> |
| |
| <!-- VALUE --> |
| <div id="valueTemplate"> |
| <dt> |
| <var>paramName</var> |
| <em> |
| |
| <!-- TYPE --> |
| <div style="display:inline"> |
| ( |
| <span class="optional">optional</span> |
| <span class="enum">enumerated</span> |
| <span id="typeTemplate"> |
| <span> |
| <a> Type</a> |
| </span> |
| <span> |
| <span> |
| array of <span><span></span></span> |
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| <span>paramType</span> |
| <span></span> |
| </span> |
| </span> |
| ) |
| </div> |
| |
| </em> |
| </dt> |
| <dd class="todo"> |
| Undocumented. |
| </dd> |
| <dd> |
| Description of this parameter from the json schema. |
| </dd> |
| <dd> |
| This parameter was added in version |
| <b><span></span></b>. |
| You must omit this parameter in earlier versions, |
| and you may omit it in any version. If you require this |
| parameter, the manifest key |
| <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a> |
| can ensure that your extension won't be run in an earlier browser version. |
| </dd> |
| |
| <!-- OBJECT PROPERTIES --> |
| <dd> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </dd> |
| |
| <!-- OBJECT METHODS --> |
| <dd> |
| <div></div> |
| </dd> |
| |
| <!-- OBJECT EVENT FIELDS --> |
| <dd> |
| <div></div> |
| </dd> |
| |
| <!-- FUNCTION PARAMETERS --> |
| <dd> |
| <div></div> |
| </dd> |
| |
| </div> <!-- /VALUE --> |
| |
| <div id="functionParametersTemplate"> |
| <h5>Parameters</h5> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </div> |
| </div> <!-- /SUBTEMPLATES --> |
| |
| <a id="top"></a> |
| <div id="skipto"> |
| <a href="#gc-pagecontent">Skip to page content</a> |
| <a href="#gc-toc">Skip to main navigation</a> |
| </div> |
| <!-- API HEADER --> |
| <table id="header" width="100%" cellspacing="0" border="0"> |
| <tbody><tr> |
| <td valign="middle"><a href="http://code.google.com/"><img src="images/code_labs_logo.gif" height="43" width="161" alt="Google Code Labs" style="border:0; margin:0;"></a></td> |
| <td valign="middle" width="100%" style="padding-left:0.6em;"> |
| <form action="http://www.google.com/cse" id="cse" style="margin-top:0.5em"> |
| <div id="gsc-search-box"> |
| <input type="hidden" name="cx" value="002967670403910741006:61_cvzfqtno"> |
| <input type="hidden" name="ie" value="UTF-8"> |
| <input type="text" name="q" value="" size="55"> |
| <input class="gsc-search-button" type="submit" name="sa" value="Search"> |
| <br> |
| <span class="greytext">e.g. "page action" or "tabs"</span> |
| </div> |
| </form> |
| |
| <script type="text/javascript" src="http://www.google.com/jsapi"></script> |
| <script type="text/javascript">google.load("elements", "1", {packages: "transliteration"});</script> |
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| </td> |
| </tr> |
| </tbody></table> |
| |
| <div id="codesiteContent" class="hideSideNav"> |
| |
| <a id="gc-topnav-anchor"></a> |
| <div id="gc-topnav"> |
| <h1>Google Chrome Extensions (<a href="http://code.google.com/labs/">Labs</a>)</h1> |
| <ul id="home" class="gc-topnav-tabs"> |
| <li id="home_link"> |
| <a href="index.html" title="Google Chrome Extensions home page">Home</a> |
| </li> |
| <li id="docs_link"> |
| <a href="docs.html" title="Official Google Chrome Extensions documentation">Docs</a> |
| </li> |
| <li id="faq_link"> |
| <a href="faq.html" title="Answers to frequently asked questions about Google Chrome Extensions">FAQ</a> |
| </li> |
| <li id="samples_link"> |
| <a href="samples.html" title="Sample extensions (with source code)">Samples</a> |
| </li> |
| <li id="group_link"> |
| <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions" title="Google Chrome Extensions developer forum">Group</a> |
| </li> |
| </ul> |
| </div> <!-- end gc-topnav --> |
| |
| <div class="g-section g-tpl-170"> |
| <!-- SIDENAV --> |
| <div class="g-unit g-first" id="gc-toc" style="display: none; "> |
| <ul> |
| <li><a href="getstarted.html">Getting Started</a></li> |
| <li><a href="overview.html">Overview</a></li> |
| <li><a href="whats_new.html">What's New?</a></li> |
| <li><h2><a href="devguide.html">Developer's Guide</a></h2> |
| <ul> |
| <li>Browser UI |
| <ul> |
| <li><a href="browserAction.html">Browser Actions</a></li> |
| <li><a href="contextMenus.html">Context Menus</a></li> |
| <li><a href="notifications.html">Desktop Notifications</a></li> |
| <li><a href="omnibox.html">Omnibox</a></li> |
| <li><a href="options.html">Options Pages</a></li> |
| <li><a href="override.html">Override Pages</a></li> |
| <li><a href="pageAction.html">Page Actions</a></li> |
| </ul> |
| </li> |
| <li>Browser Interaction |
| <ul> |
| <li><a href="bookmarks.html">Bookmarks</a></li> |
| <li><a href="cookies.html">Cookies</a></li> |
| <li><a href="events.html">Events</a></li> |
| <li><a href="history.html">History</a></li> |
| <li><a href="management.html">Management</a></li> |
| <li><a href="tabs.html">Tabs</a></li> |
| <li><a href="windows.html">Windows</a></li> |
| </ul> |
| </li> |
| <li>Implementation |
| <ul> |
| <li><a href="a11y.html">Accessibility</a></li> |
| <li><a href="background_pages.html">Background Pages</a></li> |
| <li><a href="content_scripts.html">Content Scripts</a></li> |
| <li><a href="xhr.html">Cross-Origin XHR</a></li> |
| <li><a href="idle.html">Idle</a></li> |
| <li><a href="i18n.html">Internationalization</a></li> |
| <li><a href="messaging.html">Message Passing</a></li> |
| <li><a href="npapi.html">NPAPI Plugins</a></li> |
| </ul> |
| </li> |
| <li>Finishing |
| <ul> |
| <li><a href="hosting.html">Hosting</a></li> |
| <li><a href="external_extensions.html">Other Deployment Options</a></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| <li><h2><a href="apps.html">Packaged Apps</a></h2></li> |
| <li><h2><a href="tutorials.html">Tutorials</a></h2> |
| <ul> |
| <li><a href="tut_debugging.html">Debugging</a></li> |
| <li><a href="tut_analytics.html">Google Analytics</a></li> |
| <li><a href="tut_oauth.html">OAuth</a></li> |
| </ul> |
| </li> |
| <li><h2>Reference</h2> |
| <ul> |
| <li>Formats |
| <ul> |
| <li><a href="manifest.html">Manifest Files</a></li> |
| <li><a href="match_patterns.html">Match Patterns</a></li> |
| </ul> |
| </li> |
| <li><a href="permission_warnings.html">Permission Warnings</a></li> |
| <li><a href="api_index.html">chrome.* APIs</a></li> |
| <li><a href="api_other.html">Other APIs</a></li> |
| </ul> |
| </li> |
| <li><h2><a href="samples.html">Samples</a></h2></li> |
| <div class="line"> </div> |
| <li><h2>More</h2> |
| <ul> |
| <li class="leftNavSelected">Chrome Web Store</li> |
| <li><a href="http://code.google.com/chrome/apps/docs/developers_guide.html">Hosted Apps</a></li> |
| <li><a href="themes.html">Themes</a></li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <script> |
| initToggles(); |
| </script> |
| |
| <div class="g-unit" id="gc-pagecontent"> |
| <div id="pageTitle"> |
| <h1 class="page_title"></h1> |
| </div> |
| <!-- TABLE OF CONTENTS --> |
| <div id="toc" style="display: none; "> |
| <h2>Contents</h2> |
| <ol> |
| <li> |
| <a>h2Name</a> |
| <ol> |
| <li> |
| <a>h3Name</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#apiReference">API reference</a> |
| <ol> |
| <li> |
| <a href="#properties">Properties</a> |
| <ol> |
| <li> |
| <a href="#property-anchor">propertyName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a>Methods</a> |
| <ol> |
| <li> |
| <a href="#method-anchor">methodName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a>Events</a> |
| <ol> |
| <li> |
| <a href="#event-anchor">eventName</a> |
| </li> |
| </ol> |
| </li> |
| <li> |
| <a href="#types">Types</a> |
| <ol> |
| <li> |
| <a href="#id-anchor">id</a> |
| </li> |
| </ol> |
| </li> |
| </ol> |
| </li> |
| </ol> |
| </div> |
| <!-- /TABLE OF CONTENTS --> |
| |
| <!-- Standard content lead-in for experimental API pages --> |
| <p id="classSummary" style="display: none; "> |
| For information on how to use experimental APIs, see the <a href="experimental.html">chrome.experimental.* APIs</a> page. |
| </p> |
| |
| <!-- STATIC CONTENT PLACEHOLDER --> |
| <div id="static"><div id="pageData-name" class="pageData"></div> |
| <div id="pageData-showSideNav" class="pageData">false</div> |
| |
| <style> |
| cs { |
| border:none; |
| margin:0; |
| } |
| |
| #pics td { |
| padding:0 1em 0 0; |
| } |
| |
| #pics img { |
| border:none; |
| } |
| </style> |
| |
| <table class="columns" style="margin:0"> |
| |
| <tbody><tr> |
| <td> |
| <h3>What are extensions?</h3> |
| |
| <p> |
| Extensions are small software programs that |
| can modify and enhance the functionality of the Chrome browser. |
| You write them using web technologies such as |
| HTML, JavaScript, and CSS. |
| You can also use the extension system to build |
| <a href="apps.html">packaged apps</a>, |
| a downloadable kind of |
| <a href="http://code.google.com/chrome/apps/index.html">installable web app</a>. |
| </p> |
| |
| <p> |
| <img src="images/index/gmail-small.png" width="91" height="35" align="right" style="margin-top:0px; margin-left:0.5em" alt="A screenshot of an extension's icon in the browser bar"> |
| From a user's point of view, |
| extensions and packaged apps are very different |
| because they present very different user interfaces. |
| Extensions have little to no user interface. |
| For example, the image to the right shows the icon |
| that provides the UI for the |
| <a href="samples.html#gmail">Gmail extension</a>. |
| </p> |
| |
| <p> |
| <img src="images/index/html5app.png" width="200" height="160" align="right" style="margin-top:0px; margin-left:0.5em" alt="A screenshot of a packaged app that implements a jigsaw puzzle"> |
| Packaged apps, on the other hand, |
| look and feel like regular web apps, |
| with a big-screen design |
| and rich UI. |
| The image to the right shows a jigsaw puzzle game |
| implemented by a packaged app. |
| </p> |
| |
| <p> |
| Both extensions and packaged apps bundle all their files |
| into a single file that the user downloads and installs. |
| This bundling means that, unlike ordinary web apps, |
| extensions and packaged apps don't need to depend |
| on content from the web. |
| </p> |
| |
| <p> |
| You can distribute your extension or packaged app |
| by using the |
| <a href="https://chrome.google.com/webstore/developer/dashboard">Chrome Developer Dashboard</a> |
| to publish to the |
| <a href="http://chrome.google.com/webstore">Chrome Web Store</a>. |
| For more information, see the |
| <a href="http://code.google.com/chrome/webstore">store developer documentation</a>. |
| </p> |
| |
| </td> |
| <td style="width:330px"> |
| <h3>How do I start?</h3> |
| |
| <p> |
| </p><ol> |
| <li> |
| Follow the <a href="getstarted.html">Getting Started tutorial</a> |
| <!-- PENDING: once we have one for packaged apps, change to |
| "for _extensions_ or _packaged_apps_" --> |
| </li> |
| <li> |
| Read the |
| <a href="overview.html">Overview</a> |
| </li> |
| <li> |
| Keep up-to-date by reading the |
| <a href="http://blog.chromium.org/">Chromium blog</a> |
| </li> |
| <li> |
| Subscribe to the |
| <a href="http://groups.google.com/a/chromium.org/group/chromium-extensions">chromium-extensions group</a> |
| </li> |
| </ol> |
| <p></p> |
| |
| <h3>Featured videos</h3> |
| |
| <p> |
| <a href="http://www.youtube.com/view_play_list?p=CA101D6A85FE9D4B">Technical videos</a> <br> |
| <a href="http://www.youtube.com/view_play_list?p=38DF05697DE372B1">Developer snapshots</a> (below) |
| </p> |
| |
| <p> |
| <iframe title="YouTube video player" width="300" height="199" src="http://www.youtube.com/embed/wRDPTnY3yO8?rel=0" frameborder="0" allowfullscreen=""></iframe> |
| </p> |
| </td> |
| </tr> |
| </tbody></table> |
| </div> |
| |
| <!-- API PAGE --> |
| <div class="apiPage" style="display: none; "> |
| <a name="apiReference"></a> |
| <h2>API reference: chrome.apiname </h2> |
| |
| <!-- PROPERTIES --> |
| <div class="apiGroup"> |
| <a name="properties"></a> |
| <h3 id="properties">Properties</h3> |
| |
| <div> |
| <a></a> |
| <h4>getLastError</h4> |
| <div class="summary"> |
| <!-- Note: intentionally longer 80 columns --> |
| <span>chrome.extension</span><span>lastError</span> |
| </div> |
| <div> |
| </div> |
| </div> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- METHODS --> |
| <div id="methodsTemplate" class="apiGroup"> |
| <a></a> |
| <h3>Methods</h3> |
| |
| <!-- iterates over all functions --> |
| <div class="apiItem"> |
| <a></a> <!-- method-anchor --> |
| <h4>method name</h4> |
| |
| <div class="summary"><span>void</span> |
| <!-- Note: intentionally longer 80 columns --> |
| <span>chrome.module.methodName</span>(<span><span>, </span><span></span> |
| <var><span></span></var></span>)</div> |
| |
| <div class="description"> |
| <p class="todo">Undocumented.</p> |
| <p> |
| A description from the json schema def of the function goes here. |
| </p> |
| |
| <!-- PARAMETERS --> |
| <h4>Parameters</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| <!-- RETURNS --> |
| <h4>Returns</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| |
| <!-- CALLBACK --> |
| <div> |
| <div> |
| <h4>Callback function</h4> |
| <p> |
| The callback <em>parameter</em> should specify a function |
| that looks like this: |
| </p> |
| <p> |
| If you specify the <em>callback</em> parameter, it should |
| specify a function that looks like this: |
| </p> |
| |
| <!-- Note: intentionally longer 80 columns --> |
| <pre>function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>;</pre> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </div> |
| </div> |
| |
| <!-- MIN_VERSION --> |
| <p> |
| This function was added in version <b><span></span></b>. |
| If you require this function, the manifest key |
| <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a> |
| can ensure that your extension won't be run in an earlier browser version. |
| </p> |
| </div> <!-- /description --> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- EVENTS --> |
| <div id="eventsTemplate" class="apiGroup"> |
| <a></a> |
| <h3>Events</h3> |
| <!-- iterates over all events --> |
| <div class="apiItem"> |
| <a></a> |
| <h4>event name</h4> |
| |
| <div class="summary"> |
| <!-- Note: intentionally longer 80 columns --> |
| <span class="subdued">chrome.bookmarks</span><span>onEvent</span><span class="subdued">.addListener</span>(function(<span>Type param1, Type param2</span>) <span class="subdued">{...}</span>); |
| </div> |
| |
| <div class="description"> |
| <p class="todo">Undocumented.</p> |
| <p> |
| A description from the json schema def of the event goes here. |
| </p> |
| |
| <!-- PARAMETERS --> |
| <div> |
| <h4>Parameters</h4> |
| <dl> |
| <div> |
| <div> |
| </div> |
| </div> |
| </dl> |
| </div> |
| </div> <!-- /decription --> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| <!-- TYPES --> |
| <div class="apiGroup"> |
| <a name="types"></a> |
| <h3 id="types">Types</h3> |
| |
| <!-- iterates over all types --> |
| <div class="apiItem"> |
| <a></a> |
| <h4>type name</h4> |
| |
| <div> |
| </div> |
| |
| </div> <!-- /apiItem --> |
| |
| </div> <!-- /apiGroup --> |
| |
| </div> <!-- /apiPage --> |
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| </div> <!-- /g-section --> |
| </div> <!-- /codesiteContent --> |
| <div id="gc-footer" --=""> |
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| <p> |
| Except as otherwise <a href="http://code.google.com/policies.html#restrictions">noted</a>, |
| the content of this page is licensed under the <a rel="license" href="http://creativecommons.org/licenses/by/3.0/">Creative Commons |
| Attribution 3.0 License</a>, and code samples are licensed under the |
| <a rel="license" href="http://code.google.com/google_bsd_license.html">BSD License</a>. |
| </p> |
| <p> |
| ©2011 Google |
| </p> |
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